I was having an issue getting the poop smell out of my pockets after trying baking soda, dawn, lemon juice and vinegar and super hot washes I figured it out! It takes three washes though.

Wash once in cold with nothing
Wash again on hot with extra soak with a little bit of purex free and clear, a half full ( past the fill line! less didn't help much) downy ball of vinegar and a squirt of dawn
Wash again on hot with extra soak with nothing